Dorman 931-578 Door Lock Actuator Motor - Rear Left

Reliable Door Lock Actuator Motor for GM Trucks and SUVs

The Dorman 931-578 door lock actuator motor is designed to restore power door lock functionality in select Cadillac, Chevrolet, and GMC vehicles. This electric actuator motor offers a universal fit and durable construction to ensure consistent performance in models like the Chevrolet Avalanche and GMC Yukon XL 1500.

• Durable metal and plastic construction for long-lasting use
• Electric actuator motor with 5-terminal blade (Aspa) connector
• Universal fit compatible with multiple GM full-size SUVs and trucks
• Rectangular female connector for secure wiring connection
• Does not include mounting hardware or wiring harness

Product Details and Specifications

The Dorman 931-578 door lock actuator motor features a combination of metal and plastic materials engineered for durability and reliable operation. It uses a 5-terminal blade-type (Aspa) connector with a rectangular female housing, ensuring compatibility with factory wiring harnesses. This electric actuator motor is designed as a universal fit part, compatible with a range of GM vehicles including the Cadillac Escalade ESV, Chevrolet Suburban 1500, and GMC Yukon XL 2500. The actuator motor operates the door lock mechanism electronically, replacing faulty or worn-out actuators to restore proper locking and unlocking functions.

Compatible Vehicles and Applications

• Cadillac Escalade ESV and Escalade EXT
• Chevrolet Avalanche and Suburban 1500/2500
• GMC Yukon XL 1500 and Yukon XL 2500

Common Issues Addressed by This Door Lock Actuator Motor

• Power door locks failing to lock or unlock
• Intermittent or no response from door lock switch
• Unusual noises coming from the door lock mechanism
• Door lock stuck in locked or unlocked position
• Electrical faults causing door lock actuator failure

Installation Notes and Tips

Installation of the Dorman 931-578 door lock actuator motor requires removal of the interior door panel to access the existing actuator. Since mounting hardware and wiring harness are not included, reuse the original components for secure installation. Ensure the 5-terminal blade connector is properly aligned with the rectangular female connector on the vehicle wiring harness. Testing the actuator motor operation before reassembling the door panel is recommended to confirm proper function.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 931-578 door lock actuator motor undergoes quality checks to ensure reliable performance in compatible Cadillac, Chevrolet, and GMC models. Please refer to Dorman's warranty policy for specific coverage details.